宾语退时态的问题

I know she were a teacher

I know she has ever been a teacher

请问以上两句中know换成 knew，从句是不是都是变成以下这句

I knew she had been a teacher

I know she were a teacher (wrong)

I know she was a teacher. (right)

I know she has ever been a teacher （句末应该有句号）

请问以上两句中know换成 knew，从句是不是都是变成以下这句

I knew she had been a teacher （是的，但是句末应该有句号）

黎反修 - 英语翻译（已退休）

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